¶ Lever
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RBF Definitions
“The principle of leverage is a scientific generalization. It makes no difference of what material either the fulcrum or the lever consists-- wood, steel, or reinforced concrete. Nor do the special case sizes of the lever and fulcrum, nor of the load pried at one end, or the work applied at the lever’s other end, in any way alter either the principle or the mathematical regularity of the ratios of physical work advantage which are provided at progressive fulcrum-to-load increments of distance outward from the fulcrum in the opposite direction along the lever’s arm at which the operating effort is applied.”
